D.C. Generators

A. slots
B. armature conductors
C. winding elements
D. poles

A. any even number of conductors
B. any odd number of conductors
C. that even number which is exact multiple of poles + 2
D. that even number which is exact multiple of poles

A. 2
B. 4
C. 6
D. 8

A. external resistance = internal char-acteristic – armature reaction
B. internal characteristic = magnetisation characteristic – ohmic drop
C. external characteristic = magnetisation characteristic – ohmic drop – armature reaction
D. magnetisation characteristic = external characteristic

A. increasing its field resistance
B. decreasing its field resistance
C. increasing its speed
D. decreasing its speed

A. Series generator
B. Shunt generator
C. Over compound generator
D. Flat compound generator

A. Series field
B. Compensating field
C. Inter pole field
D. Shunt field

A. demagnetisation of leading pole tip and magnetisation of trailing pole tip
B. demagnetisation of trailing pole tip and magnetisation of leading pole tip
C. damagnetising the center of all poles
D. magnetising the center of all poles

A. zero
B. small
C. the same as rated voltage
D. high

A. to reduce eddy current losses
B. to enhance flux density
C. to amplify voltage
D. to provide mechanical balance for the rotor